Arcade
Coil Clash
Grow a glowing snake in an arena full of computer rivals: eat orbs, boost past danger, and make rivals crash into your body.
- Keyboard
- Touch
A fair heads or tails in one tap, with a running count of every flip and your current streak.
Ready to flip
Need to settle who goes first, or make a quick yes or no decision? Flip a coin. Every flip is an even chance of heads or tails, and the tool keeps count so you can see how a run of flips is going.
Yes. Each flip uses your browser’s cryptographic random number generator, so heads and tails are equally likely and earlier flips have no effect on the next one.
Streaks are normal. In ten flips, a run of four or more of the same side happens quite often. Each flip is still a fresh 50/50.
No. The count is kept only while the page is open.
Arcade
Grow a glowing snake in an arena full of computer rivals: eat orbs, boost past danger, and make rivals crash into your body.
Puzzle
Clear the minefield using the numbers as clues. Three levels, flags, chording and a first click that is always safe.
Card
Classic Klondike Solitaire. Build four suits from ace to king, with Draw 1 or Draw 3, unlimited passes, undo and hints.
Roll up to 12 fair dice at once, from d4 to d100, with the total worked out for you.
Pick one number or up to 1,000 from any range, with or without repeats, ready to copy.
Type or paste any 9 × 9 Sudoku and get the solution, plus a check that the puzzle has exactly one.
A simple scoresheet for 8 players or fewer: enter each round and the totals and leader update for you.